All posts in the 'General electronic projects' Category
If you are using DX-70 and the SGC-239 tuner you will found a this problem-the DX-70 and the SGC-239 tuner were never designed to work together. Alinco did provide an Accessory port on the back of the radio as well as a tune button on the front panel, however some interaction with the tuner (or this interface box) is necessary for anything productive to happen. In a nutshell, this interface box’s purpose in life is to wait for the tune button to be pressed, start the transmitter, and wait for the SGC tuner to finish it’s job. It is a simple circuit for a simple task.[more]
The USB-powered Beagle Board is a low-cost, fan-less single board computer that unleashes laptop-like performance and expandability without the bulk, expense, or noise of typical desktop machines.It is designed by BeagleBoard.org.[more]
The burner is built on Veroboard and can be constructed very cheaply.You’ll need at least a 386 with 4 Megabytes of RAM, running MS-DOS (or equivalent), Windows 95, Windows 98, or OS/2. To read and write EPROMs, the parallel port should support one of the bi-directional protocols.[more]
The purpose of this project was to build an inexpensive 65c02 based single board computer.This SBC includes a 1Mhz 65C02, 32K RAM, 32K ROM, and a 6522 CIA, and necessary logic to make it all work together.The design is very straightforward.It is used a 1 MHz TTL Oscillator for timing and three standard 74LSXX chips for decoding. The WR pin of the EEPROM is connected via a jumper and has a pull-up resistor to prevent accident writes.[more]
This is an UHF FM BUG with ButtonCell battery.This bug is 100% made from an old Nokia GSM phone! It operates at 434 MHz and reception can be achieved on a modified TV tuner or 70cm band HAM radio. [more]
